Programmiererforum

private static final ConcurrentHashMap type2fileMap = new ConcurrentHashMap();
private static float getDefaultPhoneTemperature() {
try {
BufferedReader reader = new BufferedReader(new FileReader("/sys/class/thermal/thermal_zone0/temp"));
String line = reader.readLine();
float cpuTemperature = Float.parseFloat(line) / 1000.0f; // 转换为摄氏度
reader.close();
return cpuTemperature;
} catch (Exception e) {
//
return 0f;
}
}
public static float getDeviceTemperatureWithSysfs() {
float temperature = 0f;
String[] cpusensors_types = {
// realme
"cpu",
"tsens_tz_sensor",
// huawei
"soc",
"system_h"
};
Map type_to_file_map = getThermalTypesMap();
for (String type : type_to_file_map.keySet()) {
// Check if the file is valid
if (!containsAny(type, cpusensors_types)) {
continue;
}
File temp = new File(type_to_file_map.get(type), "temp");
if (!isFileExistsAndCanRead(temp)) {
continue;
}
// Read the kernel file parameter
try (BufferedReader reader = new BufferedReader(new FileReader(temp))) {
temperature = Float.parseFloat(reader.readLine()) / 1000f;
if (isValidTemperature(temperature)) {
break;
}
} catch (Exception e) {
e.printStackTrace();
}
}
return isValidTemperature(temperature) ? temperature : getDefaultPhoneTemperature();
}

public static Map getThermalTypesMap() {
if (!type2fileMap.isEmpty()) {
return type2fileMap;
}
File[] zones = new File("/sys/class/thermal").listFiles((dir, name) -> {
return name.startsWith("thermal_zone");
});
if (zones == null) {
return type2fileMap;
}
for (File zone : zones) {
File type = new File(zone, "type");
if (!isFileExistsAndCanRead(type)) {
continue;
}
try (BufferedReader reader = new BufferedReader(new FileReader(type))) {
type2fileMap.put(reader.readLine(), zone);
} catch (Exception e) {
e.printStackTrace();
}
}
return type2fileMap;
}

Ich versuche, die CPU-Temperatur mithilfe der Linux-API /sys/class/thermal/thermal_zone*/temp abzurufen. Hier ist der Code, den ich verwende:
[code]private static final ConcurrentHashMap type2fileMap = new ConcurrentHashMap();
private static float getDefaultPhoneTemperature() {
try {
BufferedReader reader = new BufferedReader(new FileReader("/sys/class/thermal/thermal_zone0/temp"));
String line = reader.readLine();
float cpuTemperature = Float.parseFloat(line) / 1000.0f; // 转换为摄氏度
reader.close();
return cpuTemperature;
} catch (Exception e) {
//
return 0f;
}
}
public static float getDeviceTemperatureWithSysfs() {
float temperature = 0f;
String[] cpusensors_types = {
// realme
"cpu",
"tsens_tz_sensor",
// huawei
"soc",
"system_h"
};
Map type_to_file_map = getThermalTypesMap();
for (String type : type_to_file_map.keySet()) {
// Check if the file is valid
if (!containsAny(type, cpusensors_types)) {
continue;
}
File temp = new File(type_to_file_map.get(type), "temp");
if (!isFileExistsAndCanRead(temp)) {
continue;
}
// Read the kernel file parameter
try (BufferedReader reader = new BufferedReader(new FileReader(temp))) {
temperature = Float.parseFloat(reader.readLine()) / 1000f;
if (isValidTemperature(temperature)) {
break;
}
} catch (Exception e) {
e.printStackTrace();
}
}
return isValidTemperature(temperature) ? temperature : getDefaultPhoneTemperature();
}

public static Map getThermalTypesMap() {
if (!type2fileMap.isEmpty()) {
return type2fileMap;
}
File[] zones = new File("/sys/class/thermal").listFiles((dir, name) -> {
return name.startsWith("thermal_zone");
});
if (zones == null) {
return type2fileMap;
}
for (File zone : zones) {
File type = new File(zone, "type");
if (!isFileExistsAndCanRead(type)) {
continue;
}
try (BufferedReader reader = new BufferedReader(new FileReader(type))) {
type2fileMap.put(reader.readLine(), zone);
} catch (Exception e) {
e.printStackTrace();
}
}
return type2fileMap;
}
[/code]
Dieser Ansatz ist jedoch nicht immer effektiv. Beispielsweise kann ich bei manchen Geräten keine gültige Temperatur ermitteln. Nach der Analyse der Daten vermute ich, dass es mit dem SoC zusammenhängt. Könnte der SoC die Fähigkeit beeinträchtigen, die CPU-Temperatur abzurufen?